The book "The Great Leveler: Violence and the History of Inequality from the Stone Age to the Twenty-First Century" by Walter Scheidel makes a similar argument:
> Are mass violence and catastrophes the only forces that can seriously decrease economic inequality? To judge by thousands of years of history, the answer is yes. Tracing the global history of inequality from the Stone Age to today, Walter Scheidel shows that inequality never dies peacefully. Inequality declines when carnage and disaster strike and increases when peace and stability return. The Great Leveler is the first book to chart the crucial role of violent shocks in reducing inequality over the full sweep of human history around the world.
I would also recommend "The Dawn of Everything" by David Graeber and David Wengrow. It explores "the roots" of inequality. A lot of interesting insights there.
> Are mass violence and catastrophes the only forces that can seriously decrease economic inequality? To judge by thousands of years of history, the answer is yes. Tracing the global history of inequality from the Stone Age to today, Walter Scheidel shows that inequality never dies peacefully. Inequality declines when carnage and disaster strike and increases when peace and stability return. The Great Leveler is the first book to chart the crucial role of violent shocks in reducing inequality over the full sweep of human history around the world.
[1] https://press.princeton.edu/books/paperback/9780691183251/th...